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"Os" is a pronoun which is often translated as "you", and "nos" is a pronoun which is often translated as "us". Learn more about the difference between "os" and "nos" below.
os(
ohs
)A pronoun is a word that stands in for a noun (e.g., she).
a. you
Os quiero mucho, chicos. Voy a echaros mucho de menos.I really love you, guys. I'll miss you a lot.
a. you
¿Quién os dio entradas de primera fila para el concierto?Who gave you front-row tickets to the concert?
a. yourselves
Os vais a lastimar si seguís jugando con esa rama.You're going to hurt yourselves if you keep playing with that stick.
nos(
nohs
)A pronoun is a word that stands in for a noun (e.g., she).
b. us (indirect object)
Los estudiantes por fin nos devolvieron los libros.The students finally returned the books to us.
c. ourselves (reflexive)
Nos divertimos mucho en la excursión.We really enjoyed ourselves on the trip.
d. each other (reciprocal)
Cuando nos vemos, nos saludamos.When we see each other, we greet each other.